Check the role first
Only owners and admins can invite people or manage project members. Members can work on project content, while guests can view project content but cannot make changes. Ask an owner or admin to change the role if the current role is insufficient.
Check the invitation state
Open the project’s member area to inspect active members and pending invitations. An owner or admin can resend or cancel an invitation. The recipient must use the signed invitation link; a new user may need to finish account setup before the project is associated with the account.
Check the limit
Active member invitations are subject to the owner’s member allowance. The application may still allow a guest invitation when the active-member limit is reached.
Diagnostic sequence
Confirm the current project and ask an owner or admin to inspect the member list. Check whether the invitation is pending, whether the recipient used the signed link with the intended account, and whether the selected role is correct. If active-member capacity blocks the invitation, review the owner’s current allowance or invite as a guest when view-only access is sufficient.
Do not grant admin access only to solve an invitation problem. Role changes affect the project structure and other members.